CVE-2026-115358 openbao CVE debrief

Who should care

Defenders responsible for OpenBao deployments should assess exposure and prioritize verification and remediation efforts to prevent potential sensitive data leaks. This includes reviewing audit logs for potential sensitive data leaks and implementing additional monitoring and logging to detect potential attacks. OpenBao operators, security teams, and vulnerability management teams should review and verify OpenBao deployments.

Why it matters

Defenders should prioritize verifying and upgrading to OpenBao version 2.6.3 or later to prevent sensitive data leaks, as the information disclosure vulnerability allows attackers to leak sensitive data into audit logs by sending malformed plugin parameters.

• Sensitive data exposure in audit logs
• Potential for unauthorized access to sensitive information
• Need for verification and remediation of OpenBao deployments

Technical summary

OpenBao before 2.6.3 contains an information disclosure vulnerability that allows attackers to leak sensitive data into audit logs by sending malformed plugin parameters. The vulnerability arises from improper handling of plugin parameters, leading to sensitive information being recorded in audit logs. This issue can be mitigated by verifying and upgrading to OpenBao version 2.6.3 or later. Defenders should prioritize verifying and upgrading to prevent sensitive data leaks. The CVE record and source item provide details on the information disclosure vulnerability in OpenBao before 2.6.3.

Defensive priority

Defenders should prioritize verifying and upgrading to OpenBao version 2.6.3 or later to prevent sensitive data leaks.

Recommended defensive actions

• Verify OpenBao version and upgrade to 2.6.3 or later
• Review audit logs for potential sensitive data leaks
• Implement additional monitoring and logging to detect potential attacks
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and source item provide details on the information disclosure vulnerability in OpenBao before 2.6.3. The vulnerability allows attackers to leak sensitive data into audit logs by sending malformed plugin parameters. Evidence is limited to CVE and source-item details. Defenders should verify OpenBao deployments and review audit logs for potential sensitive data leaks.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.